Basically what 004e0eb3ab ("panfrost: use RGB1 component ordering
for R5G6B5 pixel formats") was doing in the gallium driver, but
applied to panvk this time.
Fixes: 004e0eb3ab ("panfrost: use RGB1 component ordering for R5G6B5 pixel formats")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30685>